Kreacher however sold enough information to get Narcissa knowing that Harry loved Sirius and would go to protect him from Voldemort in a possible hostage crisis. So, Narcissa told Voldemort of the information and he planted a false image in Harry's head, thanks to Kreacher's treachery.
It's unknown what happened to Grimmauld Place when the Second Wizarding War was over, but even though Harry was not living in it, it's possible that it was kept safe for the Order of the Phoenix.
Unfortunately, in a daring escape from the Ministry of Magic, Harry, Ron, and Hermione were forced to leave Grimmauld Place, and Kreacher, behind at the end of chapter 13 as they accidentally revealed their location. Our last glance at Kreacher is during the Battle of Hogwarts in chapter 36.
After his escape in 1993, Sirius gave the home over to the Order of the Phoenix to be used as a headquarters. The home required an arduous cleaning up to make it even remotely habitable. Much of this work fell to Molly Weasley and her children.
The door rarely opened, and the first time anyone other than Kreacher entered the place for years was when Harry Potter, Ronald Weasley and Hermione Granger visited to give Kreacher a Christmas present (a patchwork quilt to brighten up his bedroom).
Harry describes Umbridge to Sirius Black, saying that she's vile enough to be a Death Eater, despite not being one. Umbridge is also depicted to be a prejudiced person, despising half-breeds and Muggle-born witches and wizards to the point of firing Hagrid due to his half-giant birth status.
While seemingly evil to his core at first, Kreacher actually exists in a morally gray area. He is uncompromisingly loyal to the House of Black (save for Sirius) but also deeply flawed in his world perspective -- even stooping to petty racism in his views of half-blood or Muggle-born wizards.
There was the sound of pattering feet, a blaze of shining copper, an echoing clang, and a shriek of agony: Kreacher had taken a run at Mundungus and hit him over the head with a saucepan.
In the epilogue, Draco marries Astoria Greengrass and has a son, Scorpius Malfoy. Draco's hairline has receded, making his face look even more pointed.
But I find the way Molly treated Sirius in his own house absolutely appalling. Sirius allowed Molly and her entire family to stay at Grimmauld Place for several weeks.
On turning eleven, Umbridge started attending Hogwarts School of Witchcraft and Wizardry. She was Sorted into Slytherin and her head of house was Horace Slughorn.
Narcissa and Bellatrix were kind to Kreacher because he was very much loyal to them, he followed each and every order of them. Also, Kreacher was not a muggle lover or blood traitor. So, there was no reason ro be harsh towards him.
However, despite being rescued by them, Griphook's general mistrust of wizardkind resulted in him betraying Harry Potter, Ron Weasley, and Hermione Granger. He betrayed them because he believed they would not hand him the Sword of Gryffindor, after destroying the Cup and other Horcruxes.
Harry was the new master of Kreacher after the death of Sirius. However to confirm that Harry truly gained mastership over Kreacher, Dumbledore asked Harry to call Kreacher where at the Dursleys, he came, thus proving his obedience towards Harry.
The potion, (the same one Dumbledore drank) caused Kreacher to have nightmarish delusions, intense stomach pains and made him dehydrated. Voldemort then left, leaving Kreacher to drink from the lake (as any water conjured evaporated) and die at the hands of the Inferi.
Kreacher, the house-elf of the Black family, was very loyal to Regulus, who always treated him with kindness. Kreacher respected Regulus very much, and he served Lord Voldemort when the latter asked Regulus to lend him a house-elf. In fact, Voldemort wanted to test the magical protections of one of his Horcruxes.
Kreacher, unable to disobey his master, switched the lockets and escaped, just as he had been ordered to. However, despite his best efforts, Kreacher was unable to destroy the Horcrux.
If you have only seen the films, you might be surprised to hear that it wasn't Cho Chang who betrayed Dumbledore's Army to Professor Umbridge – it was Marietta Edgecombe. A friend of Cho's and a fellow Ravenclaw, Marietta (reluctantly) joined the DA.
Luna married fellow naturalist Rolf Scamander, grandson of Fantastic Beasts and Where to Find Them author Newt Scamander, considerably later in life than Harry, Ron, Hermione, and Ginny, who all married and started families in their early-to-mid twenties.
He is closely associated with the Order of the Phoenix, and has explicitly denied the anti-Muggle/Muggle-born ideology of the Death Eaters. There is quite literally NO plausible way Hagrid could be or ever have been a Death Eater.
Honestly, Hermione knew Dobby was a lost case... nothing could have revived Dobby after the attack or she would have definitely helped Harry with Dobby considering she was the girl who started S.P.E.W(Society for the Elfish welfare) and fought for elf rights. There was nothing to be done at that point.
Even though she had a general knowledge of various spells, she was not trained for healing - even in the books she mentions she never attempted to further her knowledge of healing wounds.
She was in shock from being tortured by Bellatrix, if you remember from the books and movies she was really weak, she couldn't do anything just witness the death happen of Dobby. She couldn't do anything.
